unicode ruby tricks

gistfile1.rb

# If you like this, you'll love:
# https://github.com/collectiveidea/unicode_math

# encoding: utf-8

module Kernel
  define_method "√" do |number|
    Math.sqrt(number)
  end
end

# Then call:
# √ 5


class Numeric
  define_method "²" do
    self ** 2
  end
end

# Then call:
# 10.²
# less cool, but fun



module Kernel
  define_method "½" do
    0.5
  end
end

# Then call:
# 5 + ½


module Kernel
  define_method "∞" do
    1.0/0.0
  end
end

# Then call:
# ∞
# or do cool things like:
# (-∞..∞).cover? 10
# (-∞..∞).cover? ∞ * ∞
# (-∞..∞).cover? ∞ + 1